| /* SPDX-License-Identifier: (GPL-2.0 OR MIT) |
| * |
| * Copyright (c) 2018 Baylibre SAS. |
| * Author: Jerome Brunet <jbrunet@baylibre.com> |
| */ |
| |
| #ifndef _MESON_AXG_TDM_H |
| #define _MESON_AXG_TDM_H |
| |
| #include <linux/clk.h> |
| #include <linux/regmap.h> |
| #include <sound/pcm.h> |
| #include <sound/soc.h> |
| #include <sound/soc-dai.h> |
| |
| #define AXG_TDM_NUM_LANES 4 |
| #define AXG_TDM_CHANNEL_MAX 128 |
| #define AXG_TDM_RATES (SNDRV_PCM_RATE_5512 | \ |
| SNDRV_PCM_RATE_8000_192000) |
| #define AXG_TDM_FORMATS (SNDRV_PCM_FMTBIT_S8 | \ |
| SNDRV_PCM_FMTBIT_S16_LE | \ |
| SNDRV_PCM_FMTBIT_S20_LE | \ |
| SNDRV_PCM_FMTBIT_S24_LE | \ |
| SNDRV_PCM_FMTBIT_S32_LE) |
| |
| struct axg_tdm_iface { |
| struct clk *sclk; |
| struct clk *lrclk; |
| struct clk *mclk; |
| unsigned long mclk_rate; |
| |
| /* format is common to all the DAIs of the iface */ |
| unsigned int fmt; |
| unsigned int slots; |
| unsigned int slot_width; |
| |
| /* For component wide symmetry */ |
| int rate; |
| }; |
| |
| static inline bool axg_tdm_lrclk_invert(unsigned int fmt) |
| { |
| return (fmt & SND_SOC_DAIFMT_I2S) ^ |
| !!(fmt & (SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_NB_IF)); |
| } |
| |
| static inline bool axg_tdm_sclk_invert(unsigned int fmt) |
| { |
| return fmt & (SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_IB_NF); |
| } |
| |
| struct axg_tdm_stream { |
| struct axg_tdm_iface *iface; |
| struct list_head formatter_list; |
| struct mutex lock; |
| unsigned int channels; |
| unsigned int width; |
| unsigned int physical_width; |
| u32 *mask; |
| bool ready; |
| }; |
| |
| struct axg_tdm_stream *axg_tdm_stream_alloc(struct axg_tdm_iface *iface); |
| void axg_tdm_stream_free(struct axg_tdm_stream *ts); |
| int axg_tdm_stream_start(struct axg_tdm_stream *ts); |
| void axg_tdm_stream_stop(struct axg_tdm_stream *ts); |
| |
| static inline int axg_tdm_stream_reset(struct axg_tdm_stream *ts) |
| { |
| axg_tdm_stream_stop(ts); |
| return axg_tdm_stream_start(ts); |
| } |
| |
| int axg_tdm_set_tdm_slots(struct snd_soc_dai *dai, u32 *tx_mask, |
| u32 *rx_mask, unsigned int slots, |
| unsigned int slot_width); |
| |
| #endif /* _MESON_AXG_TDM_H */ |